Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7422781 | Tamper indicating devices and methods for securing information | — | 2008-09-09 |
| 6416857 | Tamper indicating device | Mark Wright, Raymond R. Rivera, Thomas P. Hanschen, Julian B. Cooley | 2002-07-09 |
| 6004656 | Color changeable device | Thomas M. Spielbauer | 1999-12-21 |
| 5885677 | Security label with diffusing indentifier medium and method of making same | Walfredo M. Marfori | 1999-03-23 |
| 5770283 | Tamper-indicating label | John A. Spevacek | 1998-06-23 |